macOS

Why is my Mac running slowly slow?

Updated 2026-08-14

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Quick answer

Your Mac may be running slowly due to insufficient RAM, outdated software, or too many background applications running simultaneously.

Several factors can contribute to a slow Mac, including hardware limitations and software issues. Identifying the root cause is essential for effective resolution.

Steps

  1. 1

    Close Unnecessary Applications

    Quit applications that you are not using. Right-click on the application in the dock and select 'Quit'.

  2. 2

    Restart Your Mac

    Sometimes a simple restart can resolve performance issues. Click on the Apple Menu and select 'Restart'.

  3. 3

    Reset SMC and NVRAM

    If issues persist, consider resetting the System Management Controller (SMC) and NVRAM. The process varies by Mac model, so refer to Apple's support page for specific instructions.

Check Activity Monitor

Use Activity Monitor to identify resource-heavy applications. Open it by searching for 'Activity Monitor' in Spotlight (Cmd + Space). Look for processes using significant CPU or memory.

Free Up Storage Space

Ensure you have enough free disk space. Go to Apple Menu > About This Mac > Storage to check your available space. Aim for at least 15% free space.

Update macOS and Applications

Keeping your software up to date can improve performance. Go to Apple Menu > System Preferences > Software Update to check for macOS updates.

Watch out for

  • Performance issues can also stem from hardware limitations, especially in older Mac models.

FAQ

How can I check my Mac's RAM usage?

You can check RAM usage in Activity Monitor under the 'Memory' tab.

What should I do if my Mac is still slow after following these steps?

Consider running Disk Utility to repair your disk or reinstalling macOS if the problem persists.

Can malware affect my Mac's performance?

Yes, malware can slow down your Mac. Use a trusted antivirus program to scan for and remove any malicious software.